Move compiler.h to commonlib

Its spreading copies got out of sync. And as it is not a standard header
but used in commonlib code, it belongs into commonlib. While we are at
it, always include it via GCC's `-include` switch.

Some Windows and BSD quirk handling went into the util copies. We always
guard from redefinitions now to prevent further issues.

Change-Id: I850414e6db1d799dce71ff2dc044e6a000ad2552
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/28927
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

src/commonlib/fsp_relocate.c

@@ -13,7 +13,6 @@
  * GNU General Public License for more details.
  */
 
-#include <compiler.h>
 #include <console/console.h>
 #include <commonlib/endian.h>
 #include <commonlib/fsp.h>

src/commonlib/include/commonlib/cbfs_serialized.h

@@ -48,7 +48,6 @@
 #define _CBFS_SERIALIZED_H_
 
 #include <stdint.h>
-#include <compiler.h>
 
 /** These are standard values for the known compression
     algorithms that coreboot knows about for stages and

src/commonlib/include/commonlib/compiler.h

@@ -0,0 +1,51 @@
+/*
+ * This file is part of the coreboot project.
+ *
+ * Copyright 2017 Google Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ */
+
+#ifndef _COMMONLIB_COMPILER_H_
+#define _COMMONLIB_COMPILER_H_
+
+#ifndef __packed
+#if defined(__WIN32) || defined(__WIN64)
+#define __packed __attribute__((gcc_struct, packed))
+#else
+#define __packed __attribute__((packed))
+#endif
+#endif
+
+#ifndef __aligned
+#define __aligned(x) __attribute__((aligned(x)))
+#endif
+
+#ifndef __always_unused
+#define __always_unused __attribute__((unused))
+#endif
+
+#ifndef __must_check
+#define __must_check __attribute__((warn_unused_result))
+#endif
+
+#ifndef __weak
+#define __weak __attribute__((weak))
+#endif
+
+#ifndef __noreturn
+#define __noreturn __attribute__((noreturn))
+#endif
+
+#ifndef __always_inline
+#define __always_inline inline __attribute__((always_inline))
+#endif
+
+#endif

src/commonlib/include/commonlib/fmap_serialized.h

@@ -37,7 +37,6 @@
 #define FLASHMAP_SERIALIZED_H__
 
 #include <stdint.h>
-#include <compiler.h>
 
 #define FMAP_SIGNATURE		"__FMAP__"
 #define FMAP_VER_MAJOR		1	/* this header's FMAP minor version */

src/commonlib/include/commonlib/rmodule-defs.h

@@ -17,7 +17,6 @@
 
 #include <stdint.h>
 #include <stddef.h>
-#include <compiler.h>
 
 #define RMODULE_MAGIC 0xf8fe
 #define RMODULE_VERSION_1 1

src/commonlib/include/commonlib/tcpa_log_serialized.h

@@ -16,7 +16,6 @@
 #ifndef __TCPA_LOG_SERIALIZED_H__
 #define __TCPA_LOG_SERIALIZED_H__
 
-#include <compiler.h>
 #include <stdint.h>
 
 #define MAX_TCPA_LOG_ENTRIES 50

src/commonlib/include/commonlib/timestamp_serialized.h

@@ -17,7 +17,6 @@
 #define __TIMESTAMP_SERIALIZED_H__
 
 #include <stdint.h>
-#include <compiler.h>
 
 struct timestamp_entry {
 	uint32_t	entry_id;

src/commonlib/lz4_wrapper.c

@@ -34,7 +34,6 @@
 #include <commonlib/helpers.h>
 #include <stdint.h>
 #include <string.h>
-#include <compiler.h>
 
 /* LZ4 comes with its own supposedly portable memory access functions, but they
  * seem to be very inefficient in practice (at least on ARM64). Since coreboot

src/commonlib/storage/sdhci.c

@@ -22,7 +22,6 @@
 #include <commonlib/sd_mmc_ctrlr.h>
 #include <commonlib/sdhci.h>
 #include <commonlib/storage.h>
-#include <compiler.h>
 #include <delay.h>
 #include <endian.h>
 #include <halt.h>